As cities are densified and as the housing shortage iscontinuously high, the need to utilize height in new constructionsincreases, and with it, also the need to quickly make preliminaryassessments when designing structural components in higherbuildings. The question of whether calculations made using handmethods and calculations made using computerized methods yieldsresults of the same order of magnitude, when analyzing structures,is therefore of interest. The question investigated in this work is whether calculationsmade by hand and calculations made with FEM-design 3D Structure,with respect to stresses in a single structural component, yieldresults of the same order of magnitude. A 16 storey building withconcrete walls and floors was the basis for the calculations. Thecalculations were made for two load cases for both handcalculations and calculations made with FEM-design 3D Structure;one case where vertical forces are considered to have a beneficialeffect on the stability of the building and one case wherevertical forces are considered to have an adverse effect on thestability of the building. The survey shows that there are major differences in resultsbetween the two methods for each load case respectively. Theexplanation for this is believed to depend upon thecharacteristics of the two calculation methods. The recommendation given in this essay is that hand calculationsshould be used when the accuracy is of less important for theapplication of the results, when there is no access tocomputerized calculation programs, or when the time required tomake more accurate calculations is limited. FEM design 3DStructure 16 should be used when accuracy is of greater importanceand complexity is high. The work was carried out in collaboration with Knut JönsonIngenjörsbyrå i Uppsala AB.